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19 January, 01:21

5 (x + 7) - 3 (x - 4) = 7x + 2 what is x?

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Answers (2)
  1. 19 January, 02:29
    0
    x = 9

    Step-by-step explanation:

    →Distribute the 5 to (x + 7), Distribute the - 3 to (x - 4):

    5 (x + 7) - 3 (x - 4) = 7x + 2

    5x + 35 - 3x + 12 = 7x + 2

    →Add like terms:

    2x + 47 = 7x + 2

    →Subtract 2x from both sides:

    47 = 5x + 2

    →Subtract 2 from both sides:

    45 = 5x

    →Divide both sides by 5:

    9 = x
  2. 19 January, 04:07
    0
    x=9

    Step-by-step explanation:

    5 (x + 7) - 3 (x - 4) = 7x + 2

    Distribute

    5x+35 - 3x + 12 = 7x + 2

    2x + 47 = 7x+2

    Subtract 2x from each side

    2x+47-2x = 7x - 2x+2

    47 = 5x+2

    Subtract 2 from each side

    47-2 = 5x+2-2

    45 = 5x

    Divide by 5

    45/5 = 5x/5

    9 = x
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